From: Shile Zhang <shile.zhang@linux.alibaba.com> mainline inclusion from mainline-5.4-rc1 commit d55a4ae9e1af5fb1657e38284ef46c56e668efdb category: backport Read /sys/fs/bcache/<uuid>/cacheN/priority_stats can take very long time with huge cache after long run. Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com> Tested-by: Heitor Alves de Siqueira <halves@canonical.com> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk> --- drivers/md/bcache/sysfs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index e2059af90791..627dcea0f5b6 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -964,6 +964,7 @@ KTYPE(bch_cache_set_internal); static int __bch_cache_cmp(const void *l, const void *r) { + cond_resched(); return *((uint16_t *)r) - *((uint16_t *)l); } -- 2.16.4